Re: Close-ups of comb - newly built from recent cut-out (Will they survive?)
The second picture has what looks like capped worker brood, but it's hard to tell from a front on photo. The drone brood is very distinctive in that it has a higher dome on it than the worker brood. If all you have is drone brood you wouldn't know any difference, but if you see the two beside each other, the drone brood sticks out like a sore thumb. On the third picture, the two capped cells, half way down and all the way on the left of the comb appear to be drone cells, but again, it's hard to tell from this perspective. But maybe it will help you tell the difference. Some cells appear flatter like worker brood, but sadly if you are having issues with brood dying in the cells, drone brood could collapse and look like worker brood until the bees uncap it and clean it out.
I don't know what's going on with the black (dead) brood. But I see you pointed out a hatching bee. That is a positive sign, but if it's a drone it could be a bad sign. Recall, laying workers can only create drones. But after a month and a half, you should by now see an issue where you have too many drones. The comb has that yellowed color indicating to me that it has already hatched at least one round of brood.
You really need to look for a queen. She may be hard to spot, but it doesn't look like you have a whole lot of bees to go through... (too early?)
Considering you have so few bees, don't be too let down that it is taking a while to build up a nest. Can you find anyone that can give you some empty donor comb? The slow buildup is due to the queen not having enough space to lay. Extra comb could really make a big difference, if in fact you do have a laying queen.
Look hard for that queen, and see if you can get us some good pictures at more of an angled view. Perhaps hold the bar straight out from your face and then turn your wrist so the far end swing over about 30 degrees to get us a good angle to see what the capped brood looks like. I'd really like to know what you find. If you do make it a success, it would certainly be one for the record books!
One package to 4 hives in 3 months. After 12 months I'm over a dozen hives and growing. Head over heels for bees!!!